WhatsApp reaches 500 Million users!

Popular IM service WhatsApp has reached the 500 million users milestone. And it’s not just the total number of users the service has but active users who use the service regularly.

This comes shortly after the company was acquired by Facebook, although WhatsApp had a healthy 450 million users at the time of acquisition. The majority of the growth comes from countries like Brazil, India, Mexico, and Russia, with India alone having 48 million WhatsApp users.

One of the reason the service is so popular in developing nations is sheer number of platforms the service is available on, which includes iOS, Android, Windows Phone, BlackBerry, Symbian and S40, unlike many other services that are only available on iOS and Android.

The service has remained unaltered since the Facebook acquisition and is expected to remain that way.